Add 21/6 and 2/81
1st number: 3 3/6, 2nd number: 2/81
21/6 + 2/81 is 571/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 6 × 27 = 162,
21/6 = 21 × 27/6 × 27 = 567/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
2/81 = 2 × 2/81 × 2 = 4/162 - Add the two like fractions:
567/162 + 4/162 = 567 + 4/162 = 571/162 - So, 21/6 + 2/81 = 571/162
In mixed form: 385/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+2/81 21/6+4/81 21/12+2/81 63/6+2/81 21/6+6/81 21/18+2/81 21/6+10/81 21/30+2/81 21/6+14/81 21/42+2/81